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Date: Thu, 4 Feb 2021 15:25:17 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Christian König
<ckoenig.leichtzumerken@...il.com>
Cc: 0day robot <lkp@...el.com>,
Christian König <christian.koenig@....com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
mojha@...eaurora.org, jkosina@...e.cz, cezary.rojewski@...el.com,
neilb@...e.com, b00073877@....edu,
andriy.shevchenko@...ux.intel.com
Subject: [list] b9dc2e0952: WARNING:at_lib/list_debug.c:#__list_add_valid
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: b9dc2e095274fa65d5b96231bb121a4e4616b5d6 ("list: add more extensive double add check")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git Christian-K-nig/list-add-more-extensive-double-add-check/20210201-215918
in testcase: locktorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
test-description: This torture test consists of creating a number of kernel threads which acquire the lock and hold it for specific amount of time, thus simulating different critical region behaviors.
test-url: https://www.kernel.org/doc/Documentation/locking/locktorture.txt
on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------------+------------+------------+
| | 4826dea261 | b9dc2e0952 |
+-------------------------------------------------------------+------------+------------+
| WARNING:at_lib/list_debug.c:#__list_add_valid | 0 | 12 |
| EIP:__list_add_valid | 0 | 12 |
+-------------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
[ 106.277211] WARNING: CPU: 1 PID: 218 at lib/list_debug.c:36 __list_add_valid (kbuild/src/consumer/lib/list_debug.c:36 (discriminator 5))
[ 106.278116] Modules linked in:
[ 106.278458] CPU: 1 PID: 218 Comm: kunit_try_catch Tainted: G W 5.11.0-rc3-00219-gb9dc2e095274 #1
[ 106.279527] EIP: __list_add_valid (kbuild/src/consumer/lib/list_debug.c:36 (discriminator 5))
[ 106.280000] Code: da 51 52 56 68 d0 c8 ed 4b 83 05 88 18 06 4d 01 83 15 8c 18 06 4d 00 e8 4d 31 25 01 83 05 90 18 06 4d 01 83 15 94 18 06 4d 00 <0f> 0b 83 05 98 18 06 4d 01 83 15 9c 18 06 4d 00 83 c4 10 31 c0 e9
All code
========
0: da 51 52 ficoml 0x52(%rcx)
3: 56 push %rsi
4: 68 d0 c8 ed 4b pushq $0x4bedc8d0
9: 83 05 88 18 06 4d 01 addl $0x1,0x4d061888(%rip) # 0x4d061898
10: 83 15 8c 18 06 4d 00 adcl $0x0,0x4d06188c(%rip) # 0x4d0618a3
17: e8 4d 31 25 01 callq 0x1253169
1c: 83 05 90 18 06 4d 01 addl $0x1,0x4d061890(%rip) # 0x4d0618b3
23: 83 15 94 18 06 4d 00 adcl $0x0,0x4d061894(%rip) # 0x4d0618be
2a:* 0f 0b ud2 <-- trapping instruction
2c: 83 05 98 18 06 4d 01 addl $0x1,0x4d061898(%rip) # 0x4d0618cb
33: 83 15 9c 18 06 4d 00 adcl $0x0,0x4d06189c(%rip) # 0x4d0618d6
3a: 83 c4 10 add $0x10,%esp
3d: 31 c0 xor %eax,%eax
3f: e9 .byte 0xe9
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 83 05 98 18 06 4d 01 addl $0x1,0x4d061898(%rip) # 0x4d0618a1
9: 83 15 9c 18 06 4d 00 adcl $0x0,0x4d06189c(%rip) # 0x4d0618ac
10: 83 c4 10 add $0x10,%esp
13: 31 c0 xor %eax,%eax
15: e9 .byte 0xe9
[ 106.282024] EAX: 00000040 EBX: becf7f01 ECX: 00000000 EDX: ffffffff
[ 106.282698] ESI: becf7f08 EDI: 00000003 EBP: becf7ed8 ESP: becf7eb8
[ 106.283362] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010246
[ 106.284059] CR0: 80050033 CR2: 00000000 CR3: 0cb60000 CR4: 000406f0
[ 106.284729] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 106.285406] DR6: fffe0ff0 DR7: 00000400
[ 106.285797] Call Trace:
[ 106.286060] __list_add (kbuild/src/consumer/include/linux/list.h:79)
[ 106.286419] list_add_tail (kbuild/src/consumer/include/linux/list.h:112)
[ 106.286804] list_test_list_double_add (kbuild/src/consumer/lib/list-test.c:720)
[ 106.287292] ? find_held_lock (kbuild/src/consumer/kernel/locking/lockdep.c:4935)
[ 106.287702] ? __kthread_parkme (kbuild/src/consumer/arch/x86/include/asm/bitops.h:207 kbuild/src/consumer/include/asm-generic/bitops/instrumented-non-atomic.h:135 kbuild/src/consumer/kernel/kthread.c:222)
[ 106.288112] ? lock_release (kbuild/src/consumer/kernel/locking/lockdep.c:5120 kbuild/src/consumer/kernel/locking/lockdep.c:5457)
[ 106.288542] kunit_try_run_case (kbuild/src/consumer/lib/kunit/test.c:242 kbuild/src/consumer/lib/kunit/test.c:285)
[ 106.288995] ? kunit_catch_run_case (kbuild/src/consumer/lib/kunit/test.c:270)
[ 106.289458] kunit_generic_run_threadfn_adapter (kbuild/src/consumer/lib/kunit/try-catch.c:30)
[ 106.290035] kthread (kbuild/src/consumer/kernel/kthread.c:292)
[ 106.290393] ? kunit_ptr_not_err_assert_format (kbuild/src/consumer/lib/kunit/try-catch.c:25)
[ 106.290966] ? list_del_init (kbuild/src/consumer/arch/x86/events/intel/uncore.c:1349)
[ 106.291413] ret_from_fork (kbuild/src/consumer/arch/x86/entry/entry_32.S:856)
[ 106.291812] ---[ end trace 45c83c6d92ae08ff ]---
[ 106.292406] ok 37 - list_test_list_double_add
[ 106.292416] kunit_try_catch (218) used greatest stack depth: 6748 bytes left
[ 106.292420] ok 9 - list-kunit-test
[ 106.310005] Freeing unused kernel image (initmem) memory: 1580K
[ 106.311600] Write protecting kernel text and read-only data: 37892k
[ 106.312308] NX-protecting the kernel data: 24708k
[ 106.321393] Run /init as init process
[ 106.321862] with arguments:
[ 106.322185] /init
[ 106.322439] with environment:
[ 106.322785] HOME=/
[ 106.323048] TERM=linux
[ 106.323345] user=lkp
[ 106.323627] job=/lkp/jobs/scheduled/vm-snb-i386-120/locktorture-300s-cpuhotplug-debian-i386-20191205.cgz-b9dc2e095274fa65d5b96231bb121a4e4616b5d6-20210203-5969-yuy83m-3.yaml
[ 106.325290] ARCH=i386
[ 106.325570] kconfig=i386-randconfig-a002-20210202
[ 106.326097] branch=linux-review/Christian-K-nig/list-add-more-extensive-double-add-check/20210201-215918
[ 106.327103] commit=b9dc2e095274fa65d5b96231bb121a4e4616b5d6
[ 106.327767] BOOT_IMAGE=/pkg/linux/i386-randconfig-a002-20210202/gcc-9/b9dc2e095274fa65d5b96231bb121a4e4616b5d6/vmlinuz-5.11.0-rc3-00219-gb9dc2e095274
[ 106.329186] max_uptime=2100
[ 106.329527] RESULT_ROOT=/result/locktorture/300s-cpuhotplug/vm-snb-i386/debian-i386-20191205.cgz/i386-randconfig-a002-20210202/gcc-9/b9dc2e095274fa65d5b96231bb121a4e4616b5d6/3
[ 106.331227] LKP_SERVER=internal-lkp-server
[ 106.331718] selinux=0
[ 106.332016] softlockup_panic=1
[ 106.332398] prompt_ramdisk=0
[ 106.332732] vga=normal
[ 106.372270] systemd[1]: RTC configured in localtime, applying delta of 0 minutes to system time.
[ 106.413240] random: systemd: uninitialized urandom read (16 bytes read)
Welcome to Debian GNU/Linux 9 (stretch)!
[ 106.566125] random: systemd: uninitialized urandom read (16 bytes read)
[ 106.635196] random: systemd-cryptse: uninitialized urandom read (16 bytes read)
[ OK ] Listening on Syslog Socket.
[ OK ] Started Dispatch Password Requests to Console Directory Watch.
[ OK ] Created slice System Slice.
Mounting RPC Pipe File System...
[ OK ] Started Forward Password Requests to Wall Directory Watch.
[ OK ] Listening on /dev/initctl Compatibility Named Pipe.
[ OK ] Listening on udev Control Socket.
[ OK ] Reached target Paths.
[ OK ] Listening on Journal Socket (/dev/log).
[ OK ] Created slice User and Session Slice.
[ OK ] Reached target Slices.
[ OK ] Reached target Encrypted Volumes.
[ OK ] Created slice system-getty.slice.
[ OK ] Listening on udev Kernel Socket.
[ OK ] Reached target Swap.
[ OK ] Listening on Journal Socket.
Starting Load Kernel Modules...
Starting Remount Root and Kernel File Systems...
Starting Create Static Device Nodes in /dev...
Starting Journal Service...
Mounting Debug File System...
[ OK ] Listening on RPCbind Server Activation Socket.
[ OK ] Mounted RPC Pipe File System.
[ OK ] Started Load Kernel Modules.
[ OK ] Started Remount Root and Kernel File Systems.
[ OK ] Started Create Static Device Nodes in /dev.
[ OK ] Mounted Debug File System.
Starting udev Kernel Device Manager...
Starting Load/Save Random Seed...
[ OK ] Reached target Local File Systems (Pre).
[ OK ] Reached target Local File Systems.
Starting Preprocess NFS configuration...
Starting udev Coldplug all Devices...
Starting Apply Kernel Variables...
Mounting Configuration File System...
[ OK ] Started udev Kernel Device Manager.
[ OK ] Started Load/Save Random Seed.
[ OK ] Started Preprocess NFS configuration.
[ OK ] Reached target NFS client services.
[ OK ] Started Apply Kernel Variables.
Starting Raise network interfaces...
[ OK ] Mounted Configuration File System.
[ 107.714356] ip (263) used greatest stack depth: 6516 bytes left
[ 108.208565] systemctl (279) used greatest stack depth: 6404 bytes left
[ OK ] Started Raise network interfaces.
[ OK ] Reached target Network.
[ OK ] Reached target Network is Online.
[ OK ] Started Journal Service.
Starting Flush Journal to Persistent Storage...
[ OK ] Started Flush Journal to Persistent Storage.
Starting Create Volatile Files and Directories...
[ OK ] Started Create Volatile Files and Directories.
Starting RPC bind portmap service...
Starting Network Time Synchronization...
Starting Update UTMP about System Boot/Shutdown...
[ OK ] Started RPC bind portmap service.
[ OK ] Reached target Remote File Systems (Pre).
[ OK ] Reached target Remote File Systems.
[ OK ] Reached target RPC Port Mapper.
[ OK ] Started Update UTMP about System Boot/Shutdown.
[ OK ] Started Network Time Synchronization.
[ OK ] Reached target System Time Synchronized.
[ OK ] Started udev Coldplug all Devices.
[ OK ] Reached target System Initialization.
[ OK ] Started Daily apt download activities.
[ OK ] Started Daily apt upgrade and clean activities.
[ 118.549503] random: fast init done
To reproduce:
# build kernel
cd linux
cp config-5.11.0-rc3-00219-gb9dc2e095274 .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
Thanks,
Oliver Sang
View attachment "config-5.11.0-rc3-00219-gb9dc2e095274" of type "text/plain" (148665 bytes)
View attachment "job-script" of type "text/plain" (4578 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (20076 bytes)
View attachment "locktorture" of type "text/plain" (3967 bytes)
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